کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
778479 1463305 2016 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Computational homogenization at extreme scales
ترجمه فارسی عنوان
همگن سازی محاسباتی در مقیاس های شدید
کلمات کلیدی
همگن سازی محاسباتی، محاسبات با کارایی بالا، محاسبات مقیاس فوق العاده. رابط های ناهمگن، مدل سازی آسیب دیدگی چند مرحله ای
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی مهندسی انرژی و فناوری های برق
چکیده انگلیسی

Multi-scale simulations at extreme scales in terms of both physical length scales and computational resources are presented. In this letter, we introduce a hierarchically parallel computational homogenization solver that employs hundreds of thousands of computing cores and resolves O(105)O(105) in material length scales (from O(cm) to O(100nm)). Simulations of this kind are important in understanding the multi-scale essence of many natural and synthetically made materials. Thus, we present a simulation consisting of 53.8 Billion finite elements with 28.1 Billion nonlinear equations that is solved on 393,216 computing cores (786,432 threads). The excellent parallel performance of the computational homogenization solver is demonstrated by a strong scaling test from 4,096 to 262,144 cores. A fully coupled multi-scale damage simulation shows a complex crack profile at the micro-scale and the macroscopic crack tunneling phenomenon. Such large and predictive simulations are an important step towards Virtual Materials Testing and can aid in development of new material formulations with extreme properties. Furthermore, the high computational efficiency of our computational homogenization solver holds great promise for utilizing the next generation of exascale parallel computing platforms that are expected to accelerate computations through orders of magnitude increase in parallelism rather than speed of each processor.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Extreme Mechanics Letters - Volume 6, March 2016, Pages 68–74
نویسندگان
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